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LM4673

National Semiconductor
Part Number LM4673
Manufacturer National Semiconductor
Description Class D Audio Power Amplifier
Published Nov 24, 2006
Detailed Description www.DataSheet4U.com LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier December 2005 LM4673 Filterless, 2....
Datasheet PDF File LM4673 PDF File

LM4673
LM4673

Overview
www.
DataSheet4U.
com LM4673 Filterless, 2.
65W, Mono, Class D Audio Power Amplifier December 2005 LM4673 Filterless, 2.
65W, Mono, Class D Audio Power Amplifier General Description The LM4673 is a single supply, high efficiency, 2.
65W, mono, Class D audio amplifier.
A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.
The LM4673 is designed to meet the demands of mobile phones and other portable communication devices.
Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.
1W with less than 1% THD+N.
Its flexible power supply requirements allow operation from 2.
4V to 5.
5V.
The LM4673 has high efficiency with speaker loads compared to a typical Class AB amplifier.
With a 3.
6V supply driving an 8Ω speaker, the IC’s efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power.
The LM4673 features a low-po...


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